Can You Use a Calculator on the ACT Exam? Policy Checker
An interactive tool to instantly check if your calculator is permitted for the ACT test, plus a complete guide to the official policy.
ACT Calculator Policy Checker
Select the category that best describes your calculator.
Calculators are only permitted on the math portion of the exam.
Calculator Permission Status by Type
What is the ACT Calculator Policy?
The ACT calculator policy is a set of rules designed to ensure fairness and test security for every student. The core question for many students is, can you use a calculator on the ACT exam? The answer is yes, but only on the Mathematics section, and only with a permitted device. This policy explicitly lists which types of calculators are allowed, which are outright prohibited, and which require specific modifications to be used. Understanding these rules is crucial, as using a prohibited device can lead to dismissal from the test center.
Any student preparing for the ACT should familiarize themselves with this policy. While all math problems on the ACT can be solved without a calculator, using a familiar and permitted tool efficiently can save valuable time. The policy balances the desire to let students use helpful tools with the need to prevent unfair advantages, such as those provided by calculators with Computer Algebra Systems (CAS) or wireless communication.
ACT Calculator “Formula”: The Rules Explained
There isn’t a mathematical formula, but a logical one that determines if a calculator is allowed. The question of can you use a calculator on the ACT exam is answered by checking against a hierarchy of rules.
- Is it the Math Test? Calculators are only allowed during the 60-minute Math section. Usage in any other section is prohibited.
- Is it on the Prohibited List? The ACT explicitly bans certain devices. This includes all calculators with a Computer Algebra System (CAS), devices with QWERTY keyboards, and any device that can communicate wirelessly (phones, tablets, smartwatches).
- Does it Require Modification? Some calculators are permitted only after specific modifications are made. For example, calculators with paper tape must have the tape removed, and those with infrared ports must have the port covered with opaque tape.
| Variable (Rule) | Meaning | Status | Typical Examples |
|---|---|---|---|
| CAS Functionality | Computer Algebra System (solves algebra symbolically) | Prohibited | TI-89, TI-Nspire CAS, HP Prime |
| QWERTY Keyboard | A typewriter-style keyboard | Prohibited | Older Casio models |
| Wireless/Communication | Any device that can access the internet or other devices | Prohibited | Cell phones, tablets, smartwatches |
| Infrared Port | A data port for communication | Requires Modification (Cover port) | HP 38G/39G/48G series |
| Paper Tape | A printing function | Requires Modification (Remove tape) | Printing calculators |
| No Prohibited Features | Standard scientific or graphing calculator | Allowed | TI-84 Plus, TI-30X, most scientific calculators |
Practical Examples (Real-World Use Cases)
Example 1: Student with a TI-84 Plus CE
- Calculator: Texas Instruments TI-84 Plus CE
- Analysis: This is a standard graphing calculator without a Computer Algebra System (CAS). It is not on the prohibited list.
- Result: Allowed. The student can use this calculator on the Math section without any modifications. This is one of the most common and recommended calculators for the ACT. Exploring an ACT math tips guide can help maximize its utility.
Example 2: Student with a TI-89 Titanium
- Calculator: Texas Instruments TI-89 Titanium
- Analysis: The TI-89 series is explicitly banned because it contains a Computer Algebra System (CAS), which can perform algebraic manipulations that are supposed to be tested.
- Result: Prohibited. The student must bring a different calculator. Showing up with a TI-89 will result in the test proctor denying its use. This highlights why checking the rules for can you use a calculator on the ACT exam is so important.
How to Use This ACT Calculator Policy Calculator
This tool simplifies the official ACT policy into a few easy steps.
- Select Calculator Type: Choose the category from the first dropdown that best matches your device. The options cover everything from basic models to prohibited ones.
- Select Test Section: In the second dropdown, specify whether you are asking about the Math section or another part of the test.
- Review the Result: The tool will instantly provide a primary result: “Allowed,” “Prohibited,” or “Not Allowed.” It also gives an intermediate result explaining the reason based on the official ACT rules. This is a key step in improving your ACT score improvement strategy.
- Use the Buttons: The ‘Reset’ button clears your selections and returns to the default. The ‘Copy Results’ button saves a summary of your selections and the outcome to your clipboard, which is useful for future reference.
Key Factors That Affect Calculator Permission
Several features determine whether a calculator is permitted. When wondering can you use a calculator on the ACT exam, you must check your device for these factors.
- Computer Algebra System (CAS): This is the most common reason for a calculator to be banned. CAS can solve equations, factor, and simplify expressions symbolically, which gives an unfair advantage. Models like the TI-89 and HP Prime are prohibited for this reason.
- QWERTY Keyboards: Calculators with a letter-key layout like a computer keyboard are not allowed. This is to prevent the use of devices that might have stored text or programming capabilities beyond simple math.
- Communication Capabilities: Any device that can communicate wirelessly (Bluetooth, Wi-Fi, cellular) is strictly forbidden. This includes phones, tablets, and smartwatches.
- External Power: A calculator must be battery-operated. Devices that require an electrical outlet are not permitted in the testing room.
- Noise and Printing: Calculators that make noise must be muted. Those with a paper tape function must have the tape roll removed before the test.
- Programs and Documents: While many graphing calculators can store programs, ACT requires that any programs which have CAS functionality must be removed. It’s a good practice to clear your calculator’s memory as part of your ACT study guide prep.
Frequently Asked Questions (FAQ)
1. Can I use a calculator on the Science section of the ACT?
No. Calculators are only permitted during the Math section of the ACT. You may not have it on your desk during the English, Reading, Science, or Writing sections.
2. What happens if I bring a prohibited calculator?
The test proctor will not allow you to use it. You will have to take the Math test without a calculator. In a worst-case scenario, being found using a prohibited device during the test could lead to your dismissal and your score being voided.
3. Is the TI-Nspire allowed on the ACT?
It depends. The TI-Nspire (non-CAS) model is allowed. However, the TI-Nspire CAS model is explicitly prohibited. You must check your specific model number.
4. Do I have to clear the memory on my TI-84 before the test?
The ACT requires you to remove any programs that have CAS functionality. While a standard TI-84 doesn’t have a built-in CAS, proctors may check for prohibited programs. To be safe, it is wise to clear any non-essential programs before test day. This is a critical part of a solid college application timeline preparation.
5. Does the ACT provide a calculator?
If you are taking the paper-based test, you must bring your own calculator. If you are taking the digital ACT, an on-screen graphing calculator (Desmos) is provided, but you are still allowed to bring your own approved handheld calculator.
6. Can I share my calculator with another student?
No. Sharing calculators during the exam is not permitted under any circumstances.
7. What is the best calculator for the ACT?
The “best” calculator is one you are familiar with that is also on the permitted list. The TI-84 Plus series is a very popular choice as it is powerful enough for all ACT math problems but does not have the prohibited CAS features. Getting to know your device is as important as knowing the SAT vs ACT differences.
8. What if my calculator runs out of batteries?
You are responsible for ensuring your calculator is in working order. The ACT recommends bringing a backup calculator and/or spare batteries just in case. Managing this is part of handling test anxiety strategies effectively.